feat(i18n): implement internationalization support for en and zh

Add i18n infrastructure with translation files and utility functions
Update components to use translations and language switching
Create localized pages for en and zh languages
Add language detection and path localization utilities

src/components/Footer.tsx

@@ -1,7 +1,13 @@
 import { personalInfo } from "@/lib/data";
+import { useTranslations, type Lang } from "@/i18n/utils";
 import { motion } from "framer-motion";
 
-export default function Footer() {
+interface FooterProps {
+  lang: Lang;
+}
+
+export default function Footer({ lang }: FooterProps) {
+  const t = useTranslations(lang);
   return (
     <footer className="border-t border-purple-500/10 py-6 bg-gradient-to-b from-background to-muted/20 backdrop-blur-sm">
       <div className="container max-w-4xl mx-auto px-6 md:px-4">
@@ -16,8 +22,7 @@ export default function Footer() {
             className="text-sm text-muted-foreground text-center md:text-left"
             whileHover={{ scale: 1.01 }}
           >
-            &copy; {new Date().getFullYear()} {personalInfo.name}. All rights
-            reserved. ✨
+            &copy; {new Date().getFullYear()} {personalInfo.name}. {t('footer.rights')} ✨
           </motion.p>
           <motion.p
             className="text-sm text-muted-foreground mt-2 md:mt-0 text-center md:text-left"